Depakote and seroquel

My son is on 3500 of depakote a day which I think is an unbelievable amount. It is said that it goes according to your weight (he has put on 50 lbs) & his dep.level always seems to come low so they kept raising it. He is on seroquel which we believe made him gain the weight & is eing weaned off that.
He is exhausted a good part of the time & reading other posts I see it is a tiring drug & that is a large amount.

Any comments would be appreciated.

I AM A 34 YO FEMALE WITH HX OF SEVERE PANIC ATTACKS, DEPRESSION, MOOD SWINGS, AND CONGESTED HEART FAILURE. I HAVE TRIED APP 20 DIFFERENT MEDICATIONS THE LATTER BEING SEROQUEL 250MG, (down from 1000mg), PAXIL CR 25MG, AND XANAX 8MG PER DAY. I HAVE GAINED APP 125 LBS IN 4 YEARS. MY PSYCHO MD SAYS THAT WITH ALL MY PROBS THIS SHOULD BE THE PERFECT MED. I START ON IT TOMORROW AND I AM SCARED TO DEATH TO TAKE IT. ANY ADVICE ON HOW LONG IT WILL TAKE TO FEEL OR SEE A DIFFERENCE.